1, the elder sister is like a teacher, guiding the younger brother to grow up. People have a cloud brother as a father, and a big sister as a mother loves her younger brother as a parent since childhood, so it can be said that a big sister is like a teacher, guiding her younger brother to grow up and helping him distinguish between right and wrong.
Sister's love goes back to ancient times like a stream. Sister's love for her brother is selfless, and taking care of her brother is like a trickle.